If you've been waiting for a futuristic sports coupe, look no further than SAAB's Aero-X concept. Powered by a twin-turbo, 400 bhp BioPower V6 engine, this concept is all about eye candy, with a cockpit canopy (replaces doors and windscreen pillars) that gives the driver full 180-degree views. The ultralight carbon fiber chassis, lightweight powertrain, and all-wheel drive suspension help the Aero-X rocket from 0-62 mph in just 4.9 seconds (computer simulated trials).